This book defends a form of ethical intuitionism, according to which (i) there are objective moral truths; (ii) we know some of these truths through a kind of immediate, intellectual awareness, or "intuition"; and (iii) our knowledge of moral truths gives us reasons for action independent of our desires. The author rebuts all the major objections to this theory and shows that the alternative theories about the nature of ethics all face grave difficulties.

Moral philosophy has long been preoccupied by a supposed dichotomy between the "good" and the "right". This dichotomy has been taken to define certain allegedly central issues for ethics. How are the good and the right related to each other? For example, is one of the two "prior" to the other? If so, is the good prior to the right, or is the right prior to the good?

Every kind of ‘ought’ implies some kind of ‘can’ – but there are many kinds of ‘ought’ and even more kinds of ‘can’. In this essay, I shall focus on a particular kind of ‘ought’ – specifically, on what I shall call the “rational ‘ought’”. On every occasion of use, this kind of ‘ought’ is focused on the situation of a particular agent at a particular time; but this kind of ‘ought’ is concerned, not with how that agent acts at (...) that time, but with what beliefs or intentions the agent has at the time, or with the sort of reasoning by means of which the agent at that time forms or revises those beliefs or intentions. (shrink)

In the subsequent pages, I want to develop a distinction between wanting and valuing which will enable the familiar view of freedom to make sense of the notion of an unfree action. The contention will be that, in the case of actions that are unfree, the agent is unable to get what he most wants, or values, and this inability is due to his own "motivational system." In this case the obstruction to the action that he most wants to do (...) is his own will. It is in this respect that the action is unfree: the agent is obstructed in and by the very performance of the action. (shrink)

I defend the following version of the ought-implies-can principle: (OIC) by virtue of conceptual necessity, an agent at a given time has an (objective, pro tanto) obligation to do only what the agent at that time has the ability and opportunity to do. In short, obligations correspond to ability plus opportunity. My argument has three premises: (1) obligations correspond to reasons for action; (2) reasons for action correspond to potential actions; (3) potential actions correspond to ability plus opportunity. In the (...) bulk of the paper I address six objections to OIC: three objections based on putative counterexamples, and three objections based on arguments to the effect that OIC conflicts with the is/ought thesis, the possibility of hard determinism, and the denial of the Principle of Alternate Possibilities. (shrink)

Most agree that when it comes to so-called 'first-order' normative ethics and political philosophy, constructivist views are a powerful family of positions. When it comes to metaethics, however, there is serious disagreement about what, if anything, constructivism has to contribute. In this paper I argue that constructivist views in ethics include not just a family of substantive normative positions, but also a distinct and highly attractive metaethical view. I argue that the widely accepted 'proceduralist characterization' of constructivism in ethics is (...) inadequate, and I propose what I call the 'practical standpoint characterization' in its place. I then offer a general taxonomy of constructivist positions in ethics. Since constructivism's standing as a family of substantive normative positions is relatively uncontested, I devote the remainder of the paper to addressing skeptics' worries about the distinctiveness of constructivism understood as a metaethical view. I compare and contrast constructivism with three other standard metaethical positions with which it is often confused or mistakenly thought to be compatible: realism; naturalist reductions in terms of an ideal response; and expressivism. In discussing the contrast with expressivism, I explain the sense in which, according to the constructivist, the distinction between substantive normative ethics and metaethics breaks down. I conclude by distinguishing between two importantly different debates about the mind-dependence of value. I argue that a failure to make this distinction is part of what explains why the possibility of constructivism as a metaethical view is often overlooked. (shrink)

Modern philosophy has been vexed by the question "Why should I be moral?" and by doubts about the rational authority of moral virtue. In Reasons without Rationalism, Kieran Setiya shows that these doubts rest on a mistake. The "should" of practical reason cannot be understood apart from the virtues of character, including such moral virtues as justice and benevolence, and the considerations to which the virtues make one sensitive thereby count as reasons to act. Proposing a new framework for debates (...) about practical reason, Setiya argues that the only alternative to this "virtue theory" is a form of ethical rationalism in which reasons derive from the nature of intentional action. Despite its recent popularity, however, ethical rationalism is false. It wrongly assumes that we act "under the guise of the good," or it relies on dubious views about intention and motivation. It follows from the failure of rationalism that the virtue theory is true: we cannot be fully good without the perfection of practical reason, or have that perfection without being good. Addressing such topics as the psychology of virtue and the explanation of action, Reasons without Rationalism is essential reading for philosophers interested in ethics, rationality, or the philosophy of mind. (shrink)

Reasons without Rationalism has two related parts, devoted to action theory and ethics, respectively. In the second part, I argue for a close connection between reasons for action and virtues of character. This connection is mediated by the idea of good practical thought and the disposition to engage in it. The argument relies on the following principle, which is intended as common ground: " Reasons: The fact that p is a reason for A to ϕ just in case A has (...) a collection of psychological states, C, such that the disposition to be moved to ϕ by C-and-the-belief-that- p is a good disposition of practical thought, and C contains no false beliefs."In effect, reasons are premises for episodes of sound practical thinking whose other conditions already …. (shrink)

Being Known is a response to a philosophical challenge which arises for every area of thought: to reconcile a plausible account of what is involved in the truth of statements in a given area with a credible account of how we can know those statements. Christopher Peacocke presents a framework for addressing the challenge, a framework which links both the theory of knowledge and the theory of truth with the theory of concept-possession.

Claims about agents’ abilities—practical abilities—are common in theliterature on free will, moral responsibility, moral obligation, personalautonomy, weakness of will, and related topics. These claims typicallyignore differences among various kinds or levels of practical ability. Inthis article, using ‘A’ as an action variable, I distinguish among threekinds or levels: simple ability toA; ability toAintentionally; and a morereliable kind of ability toAassociated with promising toA. I believe thatattention to them will foster progress on the topics I mentioned. Substan-tiating that belief—by making progress (...) on these topics in light of suchattention—is a project for other occasions. My aim here is to lay a partialfoundation for that project. (shrink)

Objectivists about obligation hold that obligations are determined by all of the normatively relevant facts. Perspectivalists, on the other hand, hold that only facts within one’s perspective can determine what we are obligated to do. This chapter argues for a perspectivalist view. It argues that what you are obligated to do is determined by the normative reasons you possess. This view is anchored in the thought that our obligations have to be action-guiding in a certain sense—we have to be able (...) to act for the reasons that obligate us. The chapter argues that we have this ability—the ability to act for the right reasons—only if we possess those reasons. Thus, objectivism is false. The second half of the chapter argues that problems having to do with new information do not plague the particular perspectival view presented. (shrink)

In this paper I offer an account of the meaning of must and can within the framework of possible worlds semantics. The paper consists of two parts: the first argues for a relative concept of modality underlying modal words like must and can in natural language. I give preliminary definitions of the meaning of these words which are formulated in terms of logical consequence and compatibility, respectively. The second part discusses one kind of insufficiency in the meaning definitions given in (...) the first part, which arise from the ex falso quodlibet paradox of logical consequence. In stepwise fashion, I make an attempt to avoid most of the consequences of this paradox for the meaning definitions of must and can. (shrink)

Content skepticism about practical reason is doubt about the bearing of rational considerations on the activities of deliberation and choice. Motivational skepticism is doubt about the scope of reason as a motive. Some people think that motivational considerations alone provide grounds for skepticism about the project of founding ethics on practical reason. I will argue, against this view, that motivational skepticism must always be based on content skepticism. I will not address the question of whether or not content skepticism is (...) justified. I want only to establish the fact that motivational skepticism has no independent force. (shrink)

We consider a paradox involving indicative conditionals (‘ifs’) and deontic modals (‘oughts’). After considering and rejecting several standard options for resolv- ing the paradox—including rejecting various premises, positing an ambiguity or hidden contextual sensitivity, and positing a non-obvious logical form—we offer a semantics for deontic modals and indicative conditionals that resolves the paradox by making modus ponens invalid. We argue that this is a result to be welcomed on independent grounds, and we show that rejecting the general validity of modus (...) ponens is compatible with vindicating most ordinary uses of modus ponens in reasoning. (shrink)

A principle that many have found attractive is one that goes by the name “'Ought' Implies 'Can'.” According to this principle, one morally ought to do something only if one can do it. This essay has two goals: to show that the principle is false and to undermine the motivations that have been offered for it. Toward the end, a proposal about moral obligation according to which something like a restricted version of 'Ought' Implies 'Can' is true is floated. Though (...) no full-fledged argument for this proposal is offered, that it fits with a rather natural and intuitive picture of the structure of morality and seems to explain certain salient features of the debate over whether the principle is true, goes some way toward recommending it. (shrink)

have come in for increasing attention and controversy. A good example would be recent debates about moral realism where question of the relation between ethics (or ethical judgment) and the will has come to loom large.' Unfortunately, however, the range of positions labelled internalist in ethical writing is bewilderingly large, and only infrequently are important distinctions kept clear.2 Sometimes writers have in mind the view that sincere assent to a moral (or, more generally, an ethical) judgment concerning what one should (...) do is necessarily connected to motivation (actual or dispositional).s This necessity may be conceptual, or perhaps metaphysical, the thought being.. (shrink)

Derek Parfit presents the third volume of On What Matters, his landmark work of moral philosophy. Parfit develops further his influential treatment of reasons, normativity, the meaning of moral discourse, and the status of morality. He engages with his critics, and shows the way to resolution of their differences.

In The Myth of Morality, Richard Joyce argues that moral discourse is hopelessly flawed. At the heart of ordinary moral judgements is a notion of moral inescapability, or practical authority, which, upon investigation, cannot be reasonably defended. Joyce argues that natural selection is to blame, in that it has provided us with a tendency to invest the world with values that it does not contain, and demands that it does not make. Should we therefore do away with morality, as we (...) did away with other faulty notions such as witches? Possibly not. We may be able to carry on with morality as a 'useful fiction' - allowing it to have a regulative influence on our lives and decisions, perhaps even playing a central role - while not committing ourselves to believing or asserting falsehoods, and thus not being subject to accusations of 'error'. (shrink)

This book offers the fullest and most sophisticated account of Gert's influential moral theory, a model first articulated in the classic work The Moral Rules: A New Rational Foundation for Morality, published in 1970. In this final revision, Gert makes clear that the moral rules are only one part of an informal system that does not provide unique answers to every moral question but does always provide a range of morally acceptable options. A new chapter on reasons includes an account (...) of what makes one reason better than another and a second new chapter is devoted to the question of justifying violations of the rules. Moral impartiality, the moral ideals, and virtue and vice, are all treated in greater detail. Throughout, Gert attempts to answer all of the challenges that his work has provoked. (shrink)

One of the most important disputes in the foundations of ethics concerns the source of practical reasons. On the desire-based view, only one’s desires provide one with reasons to act. On the value-based view, reasons are instead provided by the objective evaluative facts, and never by our desires. Similarly, there are desire-based and non-desired-based theories about two other phenomena: pleasure and welfare. It has been argued, and is natural to think, that holding a desire-based theory about either pleasure or welfare (...) commits one to recognizing that desires do provide reasons for action – i.e., commits one to abandoning the value-based theory of reasons. The purpose of this paper is to show that this is not so. All of the following can be true: pleasure and welfare provide reasons; pleasure and welfare are to be understood in terms of desire; desires never provide reasons, in the relevant way. (shrink)

This book provides a sophisticated analysis of various types of moral relativism, showing how arguments both for and against them fail to account for the basic intuitions such theories were inteded to address. Streiffer then constructs a compelling alternative model of reasons for acting which avoids the pitfalls of theories earlier discussed.

What are our duties or rights? How should we act? What are we responsible for? Joseph Raz examines the philosophical issues underlying these everyday questions. He explores the nature of normativity--the reasoning behind certain beliefs and emotions about how we should behave--and offers a novel account of responsibility.

There is a debate in normative ethics about whether or not our moral obligations depend solely on either our evidence concerning, or our beliefs about, the world. Subjectivists maintain that they do and objectivists maintain that they do not. I shall offer some arguments in support of objectivism and respond to the strongest argument for subjectivism. I shall also briefly consider the significance of my discussion to the debate over whether one’s future voluntary actions are relevant to one’s current moral (...) obligations. (shrink)

Objectivists about obligation hold that obligations are determined by all of the normatively relevant facts. Perspectivalists, on the other hand, hold that only facts within one's perspective can determine what we are obligated to do. In this paper I argue for a perspectivalist view. On my view, what you are obligated to do is determined by the normative reasons you possess. My argument for my view is anchored in the thought that our obligations have to be action-guiding in a certain (...) sense--we have to be able to act for the reasons that obligate us. I argue that we have this ability--the ability to act for the right reasons--only if we possess those reasons. Thus, objectivism is false. In the second half of the paper I argue that problems having to do with new information do not plague my particular perspectival view. (shrink)